Download the spondylolithesis powerpoint slide. These are the collection of the slides
www.mehtaspine.co.uk/ppts/Spondylolisthesis.pptx
www.myflsa.com/downloads/files/Spondylolisthesis%20%20.ppt
Spondylolisthesis ppt
www.drramani.com/presentations/Lumbar_Instability.pdf